16666666974 has 16 divisors (see below), whose sum is σ = 37037037840. Its totient is φ = 5555555640.

The previous prime is 16666666963. The next prime is 16666666997. The reversal of 16666666974 is 47966666661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154320937 + ... + 154321044.

It is an arithmetic number, because the mean of its divisors is an integer number (2314814865).

Almost surely, 2^16666666974 is an apocalyptic number.

16666666974 is an abundant number, since it is smaller than the sum of its proper divisors (20370370866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16666666974 is a wasteful number, since it uses less digits than its factorization.

16666666974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308641992 (or 308641986 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 63.

The spelling of 16666666974 in words is "sixteen billion, six hundred sixty-six million, six hundred sixty-six thousand, nine hundred seventy-four".